C# Resized images have black borders

Question

I have a problem with image scaling in .NET. I use the standard Graphics type to resize images like in this example:

public static Image Scale(Image sourceIm         


        

Answer 1

None of these worked for me.

However, changing the format from

System.Drawing.Imaging.PixelFormat.Format24bppRgb

to

System.Drawing.Imaging.PixelFormat.Format32bppArgb 

did solve the problem

using (System.Drawing.Bitmap newImage = new System.Drawing.Bitmap(newWidth, newHeight,
                // System.Drawing.Imaging.PixelFormat.Format24bppRgb // OMG bug
                    System.Drawing.Imaging.PixelFormat.Format32bppArgb 
                ))
            {